I haven't learned much about the mechanics of how my pool and spa work so I'm not sure what the problem is or how to fix it. I turned the pool off and the spa on today and the water continued to flow through the spa into the pool and back. Usually turning on the spa closes off the pool so the water stops going over the waterfall and is contained to flowing through the spa drains and returns. Is this a problem with a valve? I can call the pool company on Tuesday, but I thought I'd try to fix it myself if it's simple. Or at the very least just try to understand the problem. Thanks!
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